after reading about the aftermarket lack of fitment, i went with an OEM one, sure it was pricey, but it worked and fit perfectly! i managed to get the entire job done in an hour, (no window shades mind you!) the allen bolt is a pain to align, but once you get it, its good. I would also recommend cleaning and waxing the area under/around the door handle, its open and exposed now, and why not!
I still cant believe that they break so often! I had to re-teach my wife how to open a door handle, gently lift upward, not yank it towards her.

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2003 X5 3.0i (02/2003) sport package, Sapphire black metallic / Black Dakota Sport seats. compass mirror retrofit, trailer hitch retrofit, Prodigy P2 trailer brake controller installed, PDC retrofit, Lumbar support retrofit. heated rear seats retrofitted. Running boards retrofitted and subwoofer install in progress. 4.8is Brakes installed front and back. Bluetooth TCU installed, Rear Fog lights installed. Retrofitted reclining rear seat backs.